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Choosing the best drill bits for steel can make a huge difference when you need clean holes, less frustration, and better results on tough materials. Steel demands more from a drill bit than wood or plastic, so the right set can help you work more efficiently whether you are handling light-gauge metal, stainless steel, or harder metals.
When selecting from the products below, pay close attention to the material type, coatings, point design, and intended use. Some options are better suited for general-purpose drilling, while others are designed specifically for hardened metal or stainless steel. It is also worth checking the set size, price, and overall rating so you can balance performance and value for your project.
Let’s get started!
Our Top Picks at a Glance
| Product | Best For | Buy Now |
|---|---|---|
| DEWALT 21 Pc HSS Bit Set | Best Overall for general metal drilling | Buy |
| BOSCH CO14B Cobalt Set | Best for stainless steel and harder metals | Buy |
| DEWALT DW1354 Titanium Set | Best Value for a compact drilling kit | Buy |
Best Drill Bits For Steel
1. Best Overall: DEWALT 21 Pc HSS Bit Set
- DEWALT 21-pack black oxide twist drill bit set is ideal for general-purpose drilling materials like metal, hardwood, softwood, PVC and fiberglass
- Parabolic flute design increases chip ejection in metal and wood drilling applications
- Black oxide coating helps resist corrosion and increase durability, so your drill bits last longer
This DEWALT set is a solid choice if you want a dependable option for drilling into steel and other metals. It is built with high speed steel bits and includes a black and gold oxide coating, which makes it a practical pick for many everyday workshop tasks.
The 135 degree split point and 31 degree helix are useful design details that can help with starting holes more cleanly. With 21 pieces in the set, it offers a flexible range of sizes for different jobs without feeling overly specialized.
If you want a well-rounded drill bit set with strong user feedback and a reasonable price, this is one of the most balanced options in the list.
Pros
- High speed steel construction
- Black and gold oxide coating
- 135 degree split point
- 21-piece set
- High customer rating
Cons
- Not a dedicated cobalt set
- May be better suited for general use than extreme-duty steel work
2. Best Value: DEWALT Titanium Nitride Coated Pilot Point Set
- Titanium Nitride Coating Pilot Point for Longer Life
- Starts on contact for cleaner holes
- No spin shanks
This DEWALT set is designed for wood, metal, and plastic, making it a useful all-around option for users who want one kit for multiple materials. The titanium nitride coating and pilot point design make it a versatile choice for mixed projects.
At 21 pieces, it gives you a good range of sizes without pushing the price too high. If your work involves steel sometimes but not exclusively, this set offers a balanced combination of utility and affordability.
It is a dependable option for anyone who wants a familiar brand and a practical bit set for general drilling tasks.
Pros
- Titanium nitride coated
- Pilot point design
- Works with wood, metal, and plastic
- 21-piece set
- Strong user rating
Cons
- Not focused only on steel
- Less specialized than cobalt metal sets
3. Best for Stainless Steel: BOSCH CO14B Cobalt M42 Set
- Cobalt M42 drill bit – provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
- Enhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits
- High-heat resistant bits – withstand high-temperature applications for extended periods of time
The BOSCH CO14B set is aimed at drilling applications in stainless steel, cast iron, titanium, and light-gauge metal. That makes it a strong contender when you need a bit set for tougher materials that can challenge standard options.
The cobalt M42 build and three-flat shank are practical features that support metal drilling use. With 14 pieces, it is a more compact set than some of the larger kits, but it is clearly positioned for demanding metal work.
If your main focus is steel and harder metals, this is one of the more targeted choices in the lineup.
Pros
- Cobalt M42 metal drill bits
- Designed for stainless steel
- Also suitable for cast iron and titanium
- Includes case
- Good rating
Cons
- Only 14 pieces
- Higher price than some general-purpose sets
4. Best for Clean Hole Sizing: HSS Titanium Step Drill Bit Set
- HSS Titanium Coating: The step drill has excellent sharpness and durability due to its high speed steel material and titanium coating
- 118° Split Point Tip & Dual-flute Design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily
- 50 Sizes in 5 Pcs: The step drill bit kit includes 5 standard pieces with totally 50 sizes for versatility, enough for your DIY needs
This five-piece step drill set is built from high speed steel with titanium coating and covers 50 sizes. It is a practical option when you need stepped hole sizes rather than a standard twist drill set.
The included aluminum case adds convenience for storage and transport. For sheet metal and similar light steel applications, step bits can be especially useful because they simplify hole enlargement and sizing.
If your projects involve metal panels, enclosures, or a range of hole diameters, this set offers a different approach from standard drill bits.
Pros
- 50 sizes in one step bit set
- High speed steel construction
- Titanium coating
- Includes aluminum case
- Useful for sizing holes in metal
Cons
- Only 5 pieces
- Less suitable as a full replacement for twist drill bits
5. Best for Hardened Metal: Crosstar M35 Cobalt Set
- 🔥 【Engineered for Hardened Metals with M35 Cobalt Steel】 Crafted from premium M35 cobalt high-speed steel (5% cobalt), these bits are specifically designed to tackle the tough materials, including stainless steel, hardened cast iron, high-carbon steel, and titanium alloys, with effective drilling hardness up to 60 HRC.
- ⚡️【TiAlN Coating for Extreme Heat Resistance & Extended Life】 The Titanium Aluminum Nitride (TiAlN) nano-coating withstands cutting temperatures up to 1472°F (800°C), drastically reducing heat buildup and friction. This results in a significantly longer tool life compared to standard titanium nitride or oxide coatings.
- 🎯 【Triple-Flute Design: Smother Finish, Faster Drilling, Pinpoint Accuracy】 The innovative three-flute geometry provides three key advantages over conventional two-flute bits: superior hole roundness and wall finish, approximately 40% improved chip ejection for cooler operation, and enhanced drilling accuracy with reduced bit walk. For optimal performance, recommended for standard depth of cut applications.
The Crosstar M35 cobalt set is built for hardened metal and stainless steel, with titanium aluminum nitride coating and a three-flute design. It is clearly intended for tougher drilling jobs where durability matters.
The set includes 21 pieces and covers sizes from 1/16 inch to 1/2 inch, giving you a useful spread for many metalworking tasks. The coating and flute design make it a strong fit for users who need a more specialized steel drilling solution.
This is a serious option for people who drill hard metals frequently and want a set built for more demanding work.
Pros
- Made for hardened metal and stainless steel
- TiAlN coated
- Three-flute design
- 21-piece set
- Wide size range
Cons
- Higher price point
- May be more than casual users need
6. Best for Bullet Point Tip Design: toolant Cobalt Drill Bit Set
- toolant Cobalt Drill Bit Set Pro - A metal drill bit set for steel and metal. Consisting of 21 titanium aluminum nitride coated cobalt drill bits with bullet point tips, offers exceptional performance specifically for drilling through metal.
- 21-piece Cobalt Drill Bits Set - Includes metal drill bits: 1/16"(*2), 5/64"(*2), 3/32"(*2), 7/64"(*2), 1/8"(*2), 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 5/16", 3/8", 1/2".
- Titanium Aluminum Nitride Coating - Increases surface hardness to 89HRC with outstanding heat-resistance, so your drill bit cuts fast and stay sharp.
The toolant cobalt drill bit set is designed for metal and steel, with a TiAlN coating and bullet point tip. It is positioned for hardened metal and stainless steel applications, which makes it a focused option for tougher materials.
With 21 pieces and sizes ranging from 1/16 inch to 1/2 inch, it provides a useful spread for common drilling tasks. The bullet point tip is a notable design detail that may appeal to users looking for a more purpose-built metal bit set.
For steel users who want a modern cobalt option with a strong materials focus, this set is worth considering.
Pros
- Built for hardened metal and stainless steel
- TiAlN coated
- Bullet point tip
- 21-piece set
- Good size range
Cons
- Pricier than general-purpose sets
- May be unnecessary for light-duty drilling
7. Best Budget Brand Option: DEWALT 14-Piece 3-Flats Shank Set
- 135 Degree Split point tip design to help reduce walking
- High Speed Steel to be used in plastic, wood, and metal
- Tapered web design for extreme durability and resisting breakage
This DEWALT 14-piece set is made for plastic, wood, and metal, and it comes with a 135 degree split point and 3-flats shank. It is the most affordable DEWALT option in this group and offers a useful entry point for basic drilling needs.
While it is not specifically designed as a heavy-duty steel kit, it still provides a practical set for users who need a compact and trusted brand option for occasional metal work. The rating is strong, which makes it more appealing at its price.
If you want a lower-cost DEWALT bit set and do not need a specialized steel-only package, this is a good place to start.
Pros
- Affordable price
- 135 degree split point
- 3-flats shank
- Suitable for metal among other materials
- Strong rating
Cons
- Not specialized for steel
- Smaller 14-piece set
8. Best Larger Set: M35 Cobalt Drill Bit Set, 29 Pieces
- Various Sizes: 29 sets of drill bits include 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64“, 3/8", 25/64", 13/32", 27/64", 7/16, 29/64, 15/32", 31/64", 1/2", can meet more needs
- M35 Cobalt Drill Bit: The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc
- Quick and Efficient: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal
This 29-piece cobalt set is built for hardened metals, stainless steel, cast iron, and wooden plastics. With a metal index storage box included, it is designed for users who want a broad selection in one package.
The M35 high speed steel construction gives it a place among stronger metal-drilling options on the list. A larger set can be helpful if you want more size choices without buying multiple kits.
For users who value quantity and a wider span of bit sizes, this set offers a practical middle ground.
Pros
- 29-piece set
- Made for hardened metals and stainless steel
- Includes metal index storage box
- Wide size coverage
- Good rating
Cons
- Higher price
- May be excessive for simple home use
9. Best for Impact Use: Makita B-65399 Impact Gold Set
- Titanium nitride (TiN) coating lasts 2.5x longer than non-coated bits
- 135 degree split point geometry for faster starts and reduced walking
- Impact rated: For use in 1/4 inches hex impact drivers
The Makita B-65399 Impact Gold set includes 14 titanium drill bits with a 1/4 inch hex shank. It is a compact set geared toward users who need bits compatible with impact-style applications.
While it is not described as a dedicated steel-only set, it does offer a practical metal-drilling option for users who prefer a hex-shank format. The set’s moderate price and strong rating make it attractive for lighter-duty jobs.
If your priority is a compact bit set with a hex shank from a trusted brand, this is a useful option to consider.
Pros
- 1/4 inch hex shank
- Titanium drill bits
- Compact 14-piece set
- Good price
- Strong rating
Cons
- Not targeted specifically at steel
- Smaller set size
10. Best Premium Larger Set: Cobalt Drill Bit Set, 29 Pieces
- M35 Cobalt Drill Bit: Premium High Speed Steel M35 (Cobalt 5%) offers superior heat resistance and greater hardness compared to ordinary drill bits. It can extend the tool's service life when drilling hard materials.
- 135° Split Point Design: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip with round straight shank, self-centering to prevent walk-off , make drilling precise and faster.
- Efficient Drilling: Fully Ground twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance.
This 29-piece M35 high speed steel twist drill set is built for hardened metals, stainless steel, cast iron, and wooden plastics. It includes a metal index storage box and provides a broad selection for more frequent drilling work.
The set is clearly meant for users who want a larger, tougher option for metal drilling jobs. Its size range from 1/16 inch to 1/2 inch makes it flexible for many workshop tasks.
For buyers who want a premium-feeling larger kit with steel-focused use in mind, this is a strong candidate.
Pros
- 29-piece set
- Designed for hardened metals and stainless steel
- Includes metal index storage box
- Wide size range
- Strong rating
Cons
- Expensive
- Very similar use case to other larger cobalt sets
11. Best Budget Large Set: Cobalt Drill Bits Set, 99 Pieces
- Cobalt M35 Material: High cost, but hardness is up to 67, cut faster and has a long life, up to 12 times compared with the average HSS titanium coated bit, save time and improve efficiency
- Hardened Full Grinding Process: Increases wear resistance, sharp and durable, used for stainless steel, cast iron, zinc alloy, titanium, aluminum, hard metal, plastic and wood
- Packaging: Hard and thick plastic box, drills bagged for compartmentalized storage, reasonable design, well secured package
This 99-piece cobalt drill bit set stands out for sheer quantity, offering M35 high speed steel twist jobber drill bits for hardened metal and stainless steel. It also includes a plastic index storage case for organization.
For users who need a large range of sizes and want a single set to cover many projects, the quantity is the biggest selling point. The price is higher, but the volume of bits may justify it for heavier workshop use.
If a broad assortment matters more than a compact kit, this is one of the biggest sets in the lineup.
Pros
- Huge 99-piece set
- Made for hardened metal and stainless steel
- M35 high speed steel
- Plastic index storage case included
- Wide coverage of sizes
Cons
- Expensive
- May include more sizes than some users need
12. Best Compact Titanium Set: DEWALT DW1354
- Connectable accessory storage system to optimize storage space of the drill bits for wood, metal and plastic
- Patented bit-bar design of the drill bits allows easy removal of bits and customizable placement
- Clear lid allows you to easily see contents at glance
The DEWALT DW1354 is a 14-piece titanium nitride coated drill bit set that offers a compact and well-known solution for general drilling tasks. Its strong rating and reasonable price make it especially appealing for budget-conscious buyers.
Although it is not a steel-only specialty set, it still belongs in this roundup because it can serve as a practical option for users who need a smaller kit for mixed materials. Its compact size may be enough for many household and workshop needs.
If you want a straightforward, reliable set without overpaying for extra pieces, this is a strong value pick.
Pros
- Titanium nitride coated
- Affordable
- Compact 14-piece set
- Strong rating
- Trusted brand
Cons
- Not specifically built for steel
- Smaller set than many others here
13. Best Starter Cobalt Set: M35 Cobalt Drill Bit Set, 20 Pieces
- 【5% COBALT TWIST DRILL BITS SET】Made from M35 Cobalt Steel with Molybdenum and Cobalt added to form a hardened alloy, can measure up to 67 Rockwell hardness, cut faster, last longer, and last longer than normal HSS drill bits 12 times.
- 【SIZE】1/16x2, 5/64x2, 3/32x2, 7/64x2, 1/8x2, 9/64, 5/32, 11/64, 3/16x2, 7/32, 1/4, 5/16, 3/8, 1/2 inch bits; Comes in plastic storage case for easy storage
- 【TWIST DESIGN AND PERFORMANCE】Precise 135° SPLIT Point, Ti Surface and 3-Flat Shank. Prevents walking and removes chips and particles faster. Precision fully ground to ensure smooth chip movement.
This 20-piece M35 cobalt drill bit kit is aimed at hardened metal use and comes with an index storage case. It is a straightforward option for users who want a cobalt set without moving into the larger or more expensive bundles.
The 1/16 inch to 1/2 inch range gives it enough flexibility for common drilling needs. Its mid-sized format may be easier to justify for people who want steel-focused performance without a huge piece count.
For a manageable cobalt starter kit, this set provides a good balance of size and purpose.
Pros
- M35 cobalt construction
- Made for hardened metal
- 20-piece set
- Includes storage case
- Good size range
Cons
- Not as feature-rich as premium sets
- Rating is solid but not top-tier
14. Best Storage Design: CaRoller Cobalt Drill Bit Set
- A Must For Professionals: Whether a professional wood worker, handyman or construction worker, or you simply enjoy the occasional house project as a relaxing hobby, the CaRoller metal drill bits for steel are an excellent assortment for ensuring perfect holes and plugs!
- Heavy Duty Construction: This drill bit sets made with HSS cobalt durable material and amber coating which ensures long-lasting use and superior wear resistance!
- Convenient Size Variety: This 29-piece M35 drill bit set includes everything you need for a user-friendly experience that suits all your needs. The set comes with: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2" bits.
The CaRoller cobalt drill bit set includes 29 pieces and comes with a practical cup-type holder. It is designed for steel, wood, plastic, and sheet metal, making it a flexible multi-material option.
The M35 cobalt steel construction gives it a place among the stronger choices for tougher drilling work. The cup-type holder is a useful feature for keeping bits organized during projects.
If organization and a large set matter to you, this is a practical and easy-to-store option.
Pros
- 29-piece set
- Includes cup-type holder
- Made for steel and sheet metal
- M35 cobalt steel
- Good rating
Cons
- Price is on the higher side
- Not as specialized as some steel-only sets
15. Best Compact Budget Set: Bosch TI5IM Impact Tough Titanium Nitride Coated Set
- NO SKATE TIP: Accurate starts
- DESIGNED FOR HEAVY-GAUGE AND HIGH-CARBON STEEL
- LONG FLUTES FOR EFFECTIVE MATERIAL REMOVAL
This Bosch 5-piece set is a compact, lower-cost option with titanium nitride coating and the Impact Tough label. It is one of the simplest sets in the list, but it may work well for users who only need a few bits on hand.
Because it is a smaller set, it is best suited as a backup or starter kit rather than a full solution for drilling steel frequently. Still, the price is attractive and the rating is solid.
For buyers who want Bosch quality in a small and affordable package, this is a straightforward choice.
Pros
- Very affordable
- Titanium nitride coated
- Compact 5-piece set
- Good rating
- Useful as a starter or backup kit
Cons
- Only 5 pieces
- Not specialized for steel drilling
Buying Guide
Drill Bit Material
For steel, the bit material matters a lot. High speed steel options are common, while cobalt sets are generally positioned for tougher metal work such as hardened steel and stainless steel.
Coating
Coatings like titanium nitride, black and gold oxide, and TiAlN are included on several of the products above. These coatings are part of what makes a bit suitable for metal use and can be an important factor when choosing between similar sets.
Point Design
Some sets include split points, pilot points, bullet point tips, or step bit designs. These designs can affect how easily the bit starts and how well it performs for specific drilling tasks.
Set Size
Think about how many pieces you actually need. A smaller kit may be enough for occasional use, while a larger set offers more flexibility if you work with steel often.
Intended Material
Not every product in this list is exclusively for steel. Some are meant for wood, plastic, and metal broadly, while others are clearly designed for stainless steel, hardened metal, or cast iron.
Storage and Organization
Cases, holders, and index boxes can make a difference in day-to-day use. A well-organized set is easier to carry, store, and keep track of over time.
Frequently Asked Questions
What type of drill bit is best for steel?
Cobalt drill bits are commonly used for tougher steel applications, while high speed steel bits can work well for general metal drilling. The best choice depends on how hard the steel is and how often you drill it.
Can I use titanium-coated drill bits on steel?
Yes, several titanium-coated and titanium nitride-coated sets in this list are advertised for metal use. They can be a practical option for lighter steel work and mixed-material projects.
Do I need a cobalt set for stainless steel?
For stainless steel and other harder metals, cobalt sets are often a better fit. Products in this list that specifically mention stainless steel or hardened metal are the safer choices for those jobs.
Is a larger drill bit set always better?
Not always. Larger sets offer more sizes, but a smaller set may be a better value if you only need a few bit sizes for occasional projects.
What is the advantage of step drill bits?
Step drill bits are useful when you need to drill or enlarge holes to multiple sizes, especially in sheet metal. They are different from standard twist drill bits and serve a more specific purpose.
Conclusion
The best choice for steel depends on the type of metal you drill most often, the features you value, and how many bits you need. If you want the most balanced overall pick, the DEWALT 21 Pc HSS set stands out as a strong all-around option. For tougher jobs like stainless steel, the BOSCH CO14B cobalt set is especially compelling.
Whether you want a budget-friendly starter kit, a larger cobalt assortment, or a specialized step bit set, the products above give you several solid paths to the Best Drill Bits For Steel. Focus on the material, coating, and set size that match your needs, and you will be far more likely to get clean, reliable results.